1. Institute of Molecular Biosciences; Mahidol University; Nakhon Pathom Thailand
2. Department of Microbiology; Faculty of Science; Mahidol University; Bangkok Thailand
3. Center for Emerging and Neglected Infectious Diseases; Mahidol University; Nakhon Pathom Thailand
4. Department of Microbiology; Faculty of Medicine Siriraj Hospital; Mahidol University; Bangkok Thailand
5. National Center for Genetic Engineering and Biotechnology; National Science and Technology Development Agency; Pathum Thani Thailand